TY - JOUR
T1 - High-Field Multi-Frequency ESR in the Quasi-1D S = 1/2 Ising-Like Antiferromagnet BaCo2V2O8 in a Transverse Field
AU - Okutani, A.
AU - Kimura, S.
AU - Takeuchi, T.
AU - Hagiwara, M.
N1 - Funding Information:
This work is partly supported by Grants-in-Aid for Scientific Research (nos. 24340073, 242440590 and 25246006) from the MEXT, Japan.
Publisher Copyright:
© 2015, Springer-Verlag Wien.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - We have performed high-field multi-frequency electron spin resonance (ESR) measurements of a single crystal of the S = 1/2 quasi one-dimensional (1D) Ising-like antiferromagnet BaCo2V2O8 at 1.5 K in magnetic fields of up to 14 T applied along [110] and [100] directions. Two main ESR branches, which are ascending and descending with increasing magnetic fields, are observed from 400 GHz at zero magnetic field in both cases. The low ESR mode shows a softening near 10 T for H || [100], while no softening was observed below 14 T for H || [110]. This difference in the magnetic excitations may explain the distinct phase diagrams for these two directions.
AB - We have performed high-field multi-frequency electron spin resonance (ESR) measurements of a single crystal of the S = 1/2 quasi one-dimensional (1D) Ising-like antiferromagnet BaCo2V2O8 at 1.5 K in magnetic fields of up to 14 T applied along [110] and [100] directions. Two main ESR branches, which are ascending and descending with increasing magnetic fields, are observed from 400 GHz at zero magnetic field in both cases. The low ESR mode shows a softening near 10 T for H || [100], while no softening was observed below 14 T for H || [110]. This difference in the magnetic excitations may explain the distinct phase diagrams for these two directions.
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U2 - 10.1007/s00723-015-0655-6
DO - 10.1007/s00723-015-0655-6
M3 - Article
AN - SCOPUS:84940606322
SN - 0937-9347
VL - 46
SP - 1003
EP - 1006
JO - Applied Magnetic Resonance
JF - Applied Magnetic Resonance
IS - 9
ER -